27077061019681 has 8 divisors (see below), whose sum is σ = 27094392478440. Its totient is φ = 27059730188928.

The previous prime is 27077061019669. The next prime is 27077061019727. The reversal of 27077061019681 is 18691016077072.

It can be written as a sum of positive squares in 4 ways, for example, as 23996477904400 + 3080583115281 = 4898620^2 + 1755159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27077061019681 - 2³⁷ = 26939622066209 is a prime.

It is a super-2 number, since 2×27077061019681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27077061019781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111216375 + ... + 111459571.

It is an arithmetic number, because the mean of its divisors is an integer number (3386799059805).

Almost surely, 2^{27077061019681} is an apocalyptic number.

It is an amenable number.

27077061019681 is a deficient number, since it is larger than the sum of its proper divisors (17331458759).

27077061019681 is a wasteful number, since it uses less digits than its factorization.

27077061019681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314003.

The product of its (nonzero) digits is 1778112, while the sum is 55.

The spelling of 27077061019681 in words is "twenty-seven trillion, seventy-seven billion, sixty-one million, nineteen thousand, six hundred eighty-one".